/*
* Copyright (C) 2005 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "WebCoreScrollView.h"
@implementation WebCoreScrollView
#if !BUILDING_ON_PANTHER
- (BOOL)autoforwardsScrollWheelEvents
{
return YES;
}
#else
- (void)scrollWheel:(NSEvent *)event
{
NSPoint origin = [[self contentView] bounds].origin;
// Compute a new origin as if we had scrolled a little bit.
// If we constrain this and nothing happens, that means we're already scrolled to the limit.
NSPoint newOrigin = origin;
if ([event deltaX] > 0) {
newOrigin.x -= 1;
} elseif ([event deltaX] < 0) {
newOrigin.x += 1;
}
if ([event deltaY] > 0) {
newOrigin.y -= 1;
} elseif ([event deltaY] < 0) {
newOrigin.y += 1;
}
// If we are already scrolled to the limit, pass on this event, and send it on to the next responder
if (NSEqualPoints(origin, [[self contentView] constrainScrollPoint:newOrigin])) {
[[self nextResponder] tryToPerform:@selector(scrollWheel:) with:event];
} else {
[super scrollWheel:event];
}
}
#endif
@end